@article{IM2_1974_8_1_a3,
     author = {M. Kh. Gizatullin and V. I. Danilov},
     title = {Examples of nonhomogeneous quasihomogeneous surfaces},
     journal = {Izvestiya. Mathematics},
     pages = {43--60},
     year = {1974},
     volume = {8},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1974_8_1_a3/}
}